neowin[.]net/news/say-goodbye-to-dx12-on-4th-gen-haswell-cpus-as-intel-defused-it-to-fight-off-security-bug/
If you have a discrete [separate] graphics card no worries.
If you are an Intel Haswell 4th Gen Core CPU owner and use the built-in Intel HD-based integrated graphics processor (IGP) to play DirectX 12 games, there's bad news for you. The company announced last month that it has disabled the DirectX 12 capabilities of these processors in order to mitigate a security vulnerability that it has identified.
the following processor lineups have lost their DirectX 12 feature-set since the driver version 15.40.44.5107:4th Generation Intel® Core™ Processors with Intel® Iris™ Pro Graphics 5200
4th Generation Intel® Core™ Processors with Intel® Iris™ Graphics 5100
4th Generation Intel® Core™ Processors with Intel® HD Graphics 5000/4600/4400/4200
Intel® Pentium® and Celeron® Processors with Intel® HD Graphics based on 4th Generation Intel® Core™